Very slow file transfer speeds in KDE

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1

Hi,

I’ve been using KDE (on OpenSUSE Tumbleweed) for the better part of the last three weeks and there’s a lot I love about it. However, there is on issue that I cannot figure out or understand.

KDE is extremely slow when I do large file transfers between two USB 3.0 HDDs. This is only with large files of approx 500mb-1GB is larger. Generally, this size file has transfer speeds between 115mbps to 150mbps when using XFCE, Gnome, Cinnamon. When using KDE, it starts off for a second or two at 115mbps-150mbps then they plummet to between 2-9mbps.

This happens when using either Dolphin or Krusader. I read about a bug from long ago where this was an issue because Dolphin would try to put the entire large file into memory at once rather than only putting the piece of the file currently being transferred. Some said Krusader was faster but that wasn’t my experience. I also have several different USB 3.0 HDDs and it’s the same speeds across all (so I don’t think it’s the drives).

I’m really falling for KDE and there’s so much I love about it. But file transfer speeds that are this slow is a problem. Is there anything that can be done about it - short of switching to another DE? This is not limited to one distro with KDE. I’ve tried several (OpenSUSE, PCLOS, Manjaro, etc) all with the same outcome. Any thoughts would be really helpful. Thanks so much in advance!

2

Try collecting system events during your file transfer on the chance something useful is written.

Open Konsole, run the following command and leave it open

sudo journalctl -f

Do your file transfer.
Copy the contents of whatever was written in Konsole to a file, maybe in kwrite or kate for safekeeping.

If you don’t know how to interpret the stdout you collected,
Post it to this thread enclosed with

tags which are easily created by using the hash button(#) in the Post editor.

TSU
3

Thanks @tsu2. I can try that easily enough.

I don’t much know how to interpret journalctl output and I can easily post that with the <code> tags. Along that line, I had another post about my system locking up and posted the journalctl output via pastebin links. Would I do better to post them via the <code> tags directly? Is that the more accepted way of doing it? I was afraid it would be too long but wonder if it might help get more answers.

4

That’s why the request to post the output so that others can read and advise further

Along that line, I had another post about my system locking up and posted the journalctl output via pastebin links. Would I do better to post them via the <code> tags directly? Is that the more accepted way of doing it? I was afraid it would be too long but wonder if it might help get more answers.

Lengthy output is best to share via pastebin or https://paste.opensuse.org/